ci/cd: add test workflow for GCC Windows

.github/workflows/test_gcc_windows.yml

@@ -0,0 +1,78 @@
+name: Tests [GCC] - Windows
+on: [push, pull_request]
+
+jobs:
+  build-and-exec:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julelang/ci@main
+
+      - name: Test - Standard Library
+        run: |
+          .\bin\julec --compiler gcc -o test tests/std
+          ./test
+
+      - name: Test - Arrays
+        run: |
+          .\bin\julec --compiler gcc -o test tests/arrays
+          ./test
+
+      - name: Assertion
+        run: |
+          .\bin\julec --compiler gcc -o test tests/assertion
+          ./test
+
+      - name: Test - Basic Calculator
+        run: |
+          .\bin\julec --compiler gcc -o test tests/basic_calculator
+      
+      - name: Test - Concurrency
+        run: |
+          .\bin\julec --compiler gcc -o test tests/concurrency
+          ./test
+
+      - name: Test - Exceptionals
+        run: |
+          .\bin\julec --compiler gcc -o test tests/exceptionals
+          ./test
+
+      - name: Test - Generics
+        run: |
+          .\bin\julec --compiler gcc -o test tests/generics
+          ./test
+
+      - name: Test - Levenshtein Distance
+        run: |
+          .\bin\julec --compiler gcc -o test tests/levenshtein_distance
+          ./test
+
+      - name: Test - Maps
+        run: |
+          .\bin\julec --compiler gcc -o test tests/maps
+          ./test
+
+      - name: Test - Operator Overloading
+        run: |
+          .\bin\julec --compiler gcc -o test tests/operator_overloading
+          ./test
+
+      - name: Test - QuickSort
+        run: |
+          .\bin\julec --compiler gcc -o test tests/quicksort
+          ./test
+
+      - name: Test - Sleep
+        run: |
+          .\bin\julec --compiler gcc -o test tests/sleep
+          ./test
+
+      - name: Test - Syntax
+        run: |
+          .\bin\julec --compiler gcc -o test tests/syntax
+          ./test
+
+      - name: Test - Traits
+        run: |
+          .\bin\julec --compiler gcc -o test tests/traits
+          ./test